CLC型非接触电能传输系统输出控制

摘要

为实现对CLC型非接触电能传输系统输出功率的控制,基于离散映射方法,完成了系统模型的构建,对周期不动点进行了解析描述,得出软开关频率点的求解方法和不同频率点上输出功率的计算方法,在此基础上,提出了基于平均功率平衡的控制方法,通过实验对该方法进行了验证.结果表明:通过不同频率点的组合控制,能够使系统在最大41 ms内完成在20～ 50 V之间的双向跳变,以满足不同的系统输出要求,开关器件工作在软开关状态.%To achieve the output control of CLC type contactless power transfer ( CPT) systems, a system model was built using the discrete time mapping method, and an analytic expression of periodic fixed points was given. On this basis, a soft-switching frequency computing method and an output power calculation method at different frequencies were developed. An output power control method based on average power balance was proposed, and then verified experimentally. The results show that the combined control at different frequency operating points can switch the output voltage between 20 and 50 V in maximum 41 ms to satisfy different load requirements, and the switching devices operate in the soft-switching state.